Dynamic magnetic information storage or retrieval – Head – Core
Patent
1978-03-23
1980-03-11
Konick, Bernard
Dynamic magnetic information storage or retrieval
Head
Core
360 744, H04M 164, H04M 1110
Patent
active
041929713
ABSTRACT:
An automatic telephone answering device, which sends out the contents of at least one recorded message to a calling party of a remote place upon arrival of a remote control signal from the calling party after the detection of a ringing signal sent over a communication circuit. In response to a first-received one of the remote control signal, a low-frequency signal generated from a low-frequency oscillator is recorded in a second channel developed on the same recording tape as a first channel for recording message in a forward direction for a predetermined period of time. A recording tape rewinding mechanism of the device is controlled to rewind the recording tape after completion of the recording of the low-frequency signal so that magnetic heads of the first channel and the second channel are opposite a position on the recording tape beyond the recorded position of the low-frequency signal but short of the end of a last recorded message. If the remote control signal is still received when the recording tape reaches the above position, at least one of the recorded messages is reproduced. The above rewind control is again carried out when the low-frequency signal is reproduced during the reproducing operation of the recorded message.
REFERENCES:
patent: 3508004 (1970-04-01), Waldman
patent: 3843842 (1974-10-01), Muller
patent: 3978289 (1976-08-01), Konno
Inahara Motoharu
Morigami Eiji
Adams Bruce L.
Burns Robert E.
Faber Alan
Iwasaki Tsushinki Kabushiki Kaisha
Konick Bernard
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